My Ca told me it will be for the 2013 or even 2014 model...the change for N20.

CA comments alone don't do a whole lot for me, but all these announcements with no mention of engine changes bothers me much more. So far, X1, Z4, and 528i getting the N20, the X3 should be next, just a matter of when.

Also, I see that the California EPA has only approved the N20 for the X1. So there should be something coming for Z4 and 528i. Hopefully the same announcement will include the X3.